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We introduce an indexing data structure for answering JPath queries, and provide a theory unifying query execution on data and index trees using operations on matrices with lattice-valued elements.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We present JPath, a JSON database query language, and its syntax, semantics, and implementation. 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